Pattern controlled drive mechanism for machines for operating upon warps



Oct. 6, 1953 2,654,138

R. P. DRAKE PATTERN CONTROLLED DRIVE MECHANISM FOR MACHINES FOROPERATING UPON WARPS Filed March 20, 1951 3 Sheets-Sheet l 33QO- O 49 J1 1 INVENTOR- 4+ 4 Passe P. .Drq/(e R. P. DRAKE Oct. 6, 1953 PATTERNCONTR 2,654,138 OLLED DRIVE MECHANISM FOR MACHINES FOR OPERATING UPONWARPS 3 Sheets-Sheet 2 Filed March 20, 1951 ATTORNEYS R. P. PATTERNCONTROLLED DRIVE MECHANISM FOR DRAKE Oct. 6, 1953 MACHINES FOR OPERATINGUPON WARPS Filed March 20, 1951 3 Sheets-Sheet s IN V EN TOR.

Passe P .Drafi' BY MM-x. 411%.

ATTORNEYs Patented Oct. 6, 1953 PATTERN CONTROLLEDDRIVE MECHANISM 7 FORMACHINES FOR OPERATING UPON WARPS Russell P. Drake, Caledonia, Ill.,assignor to Barber-Colman Company, Rockford, 111., a corporation ofIllinois Application March20, 1951', Serial No. 216,602

9 Claims. (01. 28-44) The invention relates to a drive mechanism for aplurality of members to be operated selectively under the control of apattern sheet, and has more specialreference to a drive mechamsm formachines for operating upon warps, such, for example, as warp drawingmachines of the type disclosed in my prior Patent No. 2,400,342, datedMay 14, 1946.

The objects of the invention are to provide for the selectiveoperationof a plurality of members such, for example, as the warp rodsin a warp drawing machine, by power driven means under the control of apattern sheet, in a manner such as to insure that the pattern will berelieved of undue pressure by the feeler elements associated therewith;to render the adjustment or timing of the parts less critical; and ingeneral to make the machine more reliable and trouble free in operation.I

The objects of the invention thus generally set forth, together withother and ancillary advantages, are obtained by the construction andarrangement shown by way of illustration in the accompanying drawingsforming part hereof, in which:

Figure 1 is a fragmentary plan view of a portion of a warp drawingmachine of the type shown in said prior patent and having the improveddrive mechanism embodied therein.

Fig. 2 is a fragmentary transversesectional view taken approximately inthe plane of line 2-2 of Fig. 1.

Fig. 3 is a fragmentary sectional view taken approximately in the planeof line 33 of Fig. 1.

Fig. 4 is a fragmentary sectional view taken in the plane of line 4-4 ofFig. 1' on an enlarged scale.

Fig. 5 is a fragmentary plan view of the mechanism shown in Fig. 4, withcertain of the frame parts shown in section.

Referring first to Fig. 1, I have shown my invention applied to a warpdrawing machine having two warp rods l and II to be operated selectivelyas determined by the pattern sheet P supported by a perforated drum l2.The latter is fast on a shaft l3 mounted upon a rocker [3- foroscillation toward and from a series of feelers l4 in the form ofelongated rods mounted for movement radially of the drum and arrangedfor actuation selectively in the oscillation 'of the drum as determinedby the pattern P.

The means for driving the drum and imparting oscillating motion theretois of the character disclosed in said prior patent. In brief, it

comprises a drive shaft l which..in turn, is conwarp rods l0 and H areactuated by a drive As herein shown, the gear 31 meshes with two spurgears 38 and 39 loose on parallel shafts 2 nected by bevel gearing Itwith a driven shaft H which, in turn, is connected by bevel gearing l8with a cross cam shaft I8 parallel with the axis of the drum.Oscillatory motion is imparted to the drum by cam means including a cam19 on the cross shaft [8 acting on the rocker Ill and step by steprotational movement is achieved by a bell crank 20 actuated by a cam 2|on the shaft H, the bell crank having a gearing connection 22 with thedrum when the latter is in retracted position (Fig. 2).

Axial movements are imparted to the feeler rods I4 selectively in theoscillation of the drum overlie the perforations, in which event theends of the rods are engaged and the rods advanced to the right in saidfigure. Return movement of such of the feeler rods which have beenadvanced 'is'effected by means of a slide 21 connected by side arms 28with the drum shaft. For this purpose a lost motion connection isprovided between the feeler rods and the slide, consisting of a notch 29in the underside of each rod providing a shoulder 30 engageable by aflange 3| on the slide in the retracting motion of the slide with thedrum. It will, ofcourse, be understood that thearrangement is such thatwhen the drum occupies its retracted position the adjacent ends of thefeeler rods clear the drum and the pattern thereon to permit of the nextstepping movement of the drum by the cam H.

In accordance with the present invention, the

means deriving power from the main drive mechanism of the machine,through the medium of single revolution clutches 32 and 33 (Fig. 1)controlled by the selectively operated feeler rods M.

'In the present instance the continuously driven shaft I7 carries aspiral gear 34 (Fig. 2) driving a similar gear 35 fast on a cross shaft36. The latter carries a spur gear 31 (Fig. 4) constituting a drivercommon to the two clutches 32 and 33.

and 4 l continuously driven in the operation of the machine.

The clutches 32 and 33 are to all intents and purposes identical so thatonly one of them need be described. As shown in Figs. 4 and 5, the

clutch 32 comprises a driving elements in the form of a disk 42 integralwith the gear 38 and having aperipheral notch 43. A second or drivendisk 44 is fast on the shaft 4|! and carries a pivoted dog 45continuously urged by a torsion spring 46 in a direction to press itsnose portion 45 toward the disk. The dog is pivoted on a stud 41supported by the disk and bracket 4 13 fixed to the dish. S5 11?geartriins' F8 and}? (Figs. I and 2) respectively connect the shafts 4Dand M with the warp rods [0 and II.

The dog 45 constitutes a ggnilec between the driving and drivfel'l; Itis normally held disengaged rain the driving disk subject to release forentry into the notch 43 thereof under the control 0f the pattern 3;

being provided for the clutch 3 Withdrawal of the stop fingers fromethetailz;

portions of the clutch dogs, under the control of the at n. et is c mplsh d; Dr am g gaps 20 re ponsive to thel tiWIfii E' 9 1" JhifiEEzwhennnpsrfgraied. easpnfirere e .s ee block the ro ds in the; forwardmovement of. the

sheet by the drnrn l2 his cam means chin:-

prises in the present in mice camfbl'oclis it an? 25 -56, rocks-thecgrrespon ing'slialftrizibr 53 aga ir'i t so as, owi d aw the.

ting element 5 ing-apluralitywpfparts to be operatedua pattern "feractuating sald parts selectively comprising, in bbiiibihatiofi, apergrated drum for supporting a pattern sheet, a

p l'iirality of feeler elements, means for reciprocats l i iii). 1?)meshes-sen dfflm when moving in one dil'e'tlori sefvii gl-tgilactuatethe feeler elements selectively as determined by the pattern sheet h thereoin drive'meansfior each of said parts com- For this purpose the doghas raradiahtlilfpcrtion. 50 normally engaged by a stop finger 5| fastupon 5 a rockshaft 52, a similar parallel rockshaft 53 I aelutcii'lgav'ing a continuously rotating drivexmeiiib ersraldrivenmember connected with the part gobe operated and having a connectingtifidii biased into engagement with the member and a stop membernormally operative in the rotation of the driven member to disensageltheconnecting ,element f rcm the driv- 3? d Ifieaiis 'lifi fb i r genes-teror the stop in t'erseiee their respective connecting are I 'i'operating upoh neviesae ii i i' i i new w baa-ea a man controlledmechanism "for actuating-said seleptively comprising, in combination, aperforat arms fdr siirfpii" a, patter-n siie'a, fa; plulralityof teier'ei eme ts, irer prosa- Eesli d e I n inf r s irecti to tuate the easierere ant *si'esvery as determined. by ftih pattern sates .anve hmui 1a,:v w H I fiahe perms be "operated and having connecting eiemfit'tfiefediipi'ased into en'gagementw th -driving,member andastop membernir l f y n h ifikn ,Ther uts zis his ees si a s n e n ms a t n t.

th t;r ta eeatme bi entis mr td ie these responding war-p rod throughthe spur gear train 4 1. .1.1 a .c. c; .n. w. in;

non ndin i 'enew ib its l O ti a ain t ia a etrqsr d ,m vsmet 9f he W 951,. oc utc disks ,Whe h s 12P=dbrvt .W torm mbena v n ms trail a 9 thedog a a spri d tenfi 'i e i s Qperiphera'l notch 59' inth'e disk, asseen clearly'i'n dr v m q a. 1m; *1 the, mafliint t ii'sie' h o .o 7lutienrliliqh .sneer-F l control of the pattern sheet; renders criticalad- .iestmeni unn ce sa a die ur sesilhs tih e L ou le. ree o e a io=thi rmes a More 7' mommy it hasb en q dfi at eny w e 3 eu l er ds m y bwa n we t im er etfi m fen -t er fo e em ere?- a ra e;sashes-sat r sen earea-7.1

io fths war deem an l vlr rq g hemeii es rea s Pi me te tidesi ftnere epjebee s.

is efiectually avoided. Thus a substantial saving movement with the drumselectively as determined by the pattern sheet, drive means for each ofsaid parts comprising a clutch having a continuously rotating drivemember, a driven member connected with the part to be operated andhaving a connecting element thereon biased into engagement with thedrive member and a stop member normally tending to move into the path ofthe connecting element in the rotation thereof with the driven memberand operative to disengage the connecting element from the drive member,and means operative in the movement of the ieeler rods to actuate thestop members so as to render their respective connecting elementseffective selectively, the last mentioned means including a cam deviceon each feeler rod and a cam follower operatively associated with one ofsaid stop members, each of said feeler rods having a lost motionconnection with the drum operative in the return movement of the latterto shift its I cam device relative to its associated follower whereby topermit movement of the latter in a direction to carry the correspondingstop member into clutch disengaging position.

5. In a warp drawing machine having a warp rod, a perforated patternsupporting drum, power driven means for rotating said drum with a stepby step movement and for reciprocating the same in timed relation to itsstepping movements, a feeler element movable with the drum as anincident to its reciprocation and as determined by a pattern sheetthereon, and means responsive to suchmovement of the feeler rod foreffecting a driving connection between said Warp rod and said powerdriven means comprising a single revolution clutch having a drivenmember connected with the Warp rod, a drive member connected with saidpower means, a connecting element for said members mounted on the drivenmember and biased into connecting relation to the driving member, acontrol device yieldably held in a position to hold the connectingelement disengaged from the driving member, and means actuated in themovement of the feeler element with the drum to shift said controldevice out of holding relation to the connecting element.

6. In a machine for operating upon warps, the combination of a pluralityof parts to be actuated selectively, a plurality of pattern controlledselectively operable feeler elements, and drive means for each of saidparts comprising a normally disengaged single revolution clutch having acontinuously rotating drive member, a driven member, a connectingelement pivotally mounted on the driven member and biased for movementinto engagement with the driving member, and

a control device operatively connected with one of the feeler elements,said control device normally holding said connecting element inefiectiveand arranged for movement by its feeler element into position to renderthe connecting element efiective.

7. In a machine for operating upon warps, the combination of a pluralityof members to be actuated selectively, a plurality of pattern controlledselectively operable feeler elements, drive means for each oi. saidmembers comprising a normally disengaged single revolution clutch, andmeans controlled by said feeler elements for engaging the clutchesselectively.

8. In a machine for operating upon warps having a, plurality of parts tobe operated selectively, a drive means for each of said parts comprisinga clutch having a continuously rotating drive member, a driven memberconnected with the part to be operated and a connecting device, stopmeans normally operative to render said connecting device ineffective,and pattern controlled mechanism for rendering said connecting deviceeffective selectively including a member operatively connected with thedrive means for reciprocation thereby in successive cycles, meansoperative in the movement of said member in one direction to actuate thestop means selectively, and means operative in the movement or saidmember in the opposite direction to restore the stop means to normalposition.

9. In a machine for operating upon warps having a plurality of parts tobe operated selectively in successive operating cycles, drive means foreach of said parts including a clutch and a control device thereforhaving a normal position in which it is effective to maintain the clutchdisengaged, and pattern controlled mechanism operative in each cycle ofthe machine to shift said clutch control devices out of their normalpositions selectively whereby to effect engagement of the correspondingclutches and further including means operative at a predetermined pointin the cycle following selective disengagement of the clutches torestore the actuated control devices to their normal positions.

RUSSELL P. DRAKE.

References Cited in the file of this patent UNITED STATES PATENTS Number

